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iSpring FM25B 4.5" x 20" Big Blue High Capacity Iron Manganese Reducing Replacement Water Filter

iSpring FM25B 4.5" x 20" Big Blue High Capacity Iron Manganese Reducing Replacement Water Filter

Q: We are looking to install this in a seasonal cabin, can this be winterized?

Hi Cate, This unit should be protected from direct sunlight or freezing temperature. Depending on the environment in the winter, the housings might become damaged. Please contact us with more details so we can better assist you. iSpring Water Systems 678-261-7611 support@ispringfilter.com

Q: I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?

allfilters.com I used iSpring for a while and then the types of filters ordered was so confusing......and its all made in China.......unlike advertised. So I switched to allfilters....now keep in mind that they don’t send one at a time....but the price difference, the nonconfusion, sent by USPS and customer support won me over. ALL MADE IN THE USA! Allfilters also sells the canisters. When ordering filters go by the size ei: 4 1/2” x 20”

Q: Do you still need a water softener with this if hardness is 250 ppm?

Hi there, It's optional but would help p[rolong the life of the filters if you install one. We usually recommend a water softener with TDS higher than 700 PPM. Please let us know if you have other concerns. Stay safe! iSpring Water Systems, LLC

Q: What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?

I use the one on a spin down pre filter and a 3/4” shark bite with gauge post filter

Product ID: 298653073

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Details

Material
Iron
Product Dimensions
15.2D x 55.9W
Item Weight
8 Pounds
External Testing Certification
ANSI
Product Benefits
Reduces Iron

💧Reduces iron from 30 to 0.001 ppm

🚀High flow rate 4-8 GPM with low pressure drop

⚙️Operates efficiently across pH 5.8-8.6 & 40-113°F

Frequently Bought Together

iSpring Whole House Water Filter Cartridge, Iron & Manganese Reducing Water Filter Whole House, 4.5" x 20", Model: FM25B

iSpring WSP-1000 Reusable Whole House Spin Down Sediment Water Filter, 1000 Micron, Flushable Prefilter Filtration, 20GPM, 1" MNPT + 3/4" FNPT, Brass

iSpring ORBX2 Replacement O-ring for Whole House Water Filtration Systems - Pack of 2

Description

💧 Elevate your water game—because your health deserves the best!

BUILT TO LAST - Catalytic media lasts 3x longer than traditional greensand filters
POWERFUL FLOW - High linear velocity ensures fast water delivery with minimal pressure loss
CERTIFIED SAFE - NSF/ANSI tested for safe drinking water you can trust
SEAMLESS PERFORMANCE - Stable filtration across wide pH and temperature ranges
ULTRA PURE HYDRATION - Drastically cuts iron & manganese for crystal-clear water

The iSpring FM25B is a high-capacity water filter cartridge designed to reduce iron and manganese levels from water down to near zero, ensuring clean, safe drinking water. It operates efficiently across a broad pH (5.8-8.6) and temperature (40-113°F) range, supports high flow rates (4-8 GPM) with minimal pressure drop, and lasts up to three times longer than conventional greensand filters thanks to its catalytic media. Independently tested to meet NSF/ANSI standards, this filter is ideal for professional-grade residential water purification.

Specifications

Material	Iron
Product Dimensions	15.2D x 55.9W x 15.2H Centimeters
Item Weight	8 Pounds
External Testing Certification	ANSI
Product Benefits	Reduces Iron
Brand	iSpring
Manufacture Year	2024
UPC	662425080076
Global Trade Identification Number	00662425080076
Net Quantity	1 Count
Compatible Water Purifier Models	iSpring WGB22BM
Number of Items	1
Manufacturer	iSpring
Country of Origin	USA
Model number	1
Colour	White
Item Weight	3 kg 630 g
Item model number	1
Power Source	ac
Included Components	1 FM25B filter
Are batteries included?	No

Have a Question? See What Others Asked

We are looking to install this in a seasonal cabin, can this be winterized?

I received this whole house filter and one of the cartridges is broken model fc25b. can i get a replacement of this broken cartridge?

Do you still need a water softener with this if hardness is 250 ppm?

What pressure gauge is recommended to install pre and post filter that will work with 3/4" PEX supply line?

Common Questions

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